Fixed Displacement Swing Drive Motor. JMF Axial Piston Motor Peak Pressure: 385 bar Displacement 29~250 cc/r

Transcription

1 Fixed Displacement Swing Drive Motor JMF Axial Piston Motor Peak Pressure: 385 bar Displacement 29~250 cc/r

2 Table of Contents General Introduction Model Code Performance Parking Brake & Brake Release Valve Anti-Reverse Valve Relief Valves Anti-Cavitation Valve Installation Dimensions Gearbox Output Shaft Motor Output Shaft Application Description Troubleshooting Application Data Sheet EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

3 General Introduction Features & Benefits Fixed displacement axial piston motor for swing applications Displacement from 29cc to 250cc is available and rated pressure is up to 320 bar Integrated fail-safe mechanical parking brake, brake release valve, shockless relief and antireverse valves Compact integrated planetary reduction gearbox Smooth and precise positioning eliminates mechanical shocks High performance and reliability proven by high market acceptance Higher mechanical and volumetric efficiency helps reduce power loss Typical Applications Excavator and mini excavator Concrete pump Crane Drilling Circuit diagram EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December

4 Model Code JMF 151 R R A 00 A 1,2,3 4,5, ,10 11,12 13,14 15, ,19 20, ,24 25 Available option Preferred option Need consult ,2,3 Swing Drive Motor 4,5,6 Displacement cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 7 Mounting flange of motor R Integrated gearbox P Motor only 8 Output shaft R Gearbox shaft S Spline w/o gearbox 9,10 Main port size 01 BSP G3/8 (JIS PF 3/8) 02 BSP G1/2 (JIS PF 1/2) 03 JIS Flange TypeI φ13, 8-M8X1.5 bolts 04 JIS Flange TypeI φ20, 8-M10X1.5 bolts 05 JIS Flange TypeI φ25, 8-M10X1.5 bolts 06 JIS Flange TypeI φ26, 8-M10X1.5 bolts 11,12 Relief valve setting 00 None bar bar bar bar bar bar bar bar bar bar bar bar bar bar bar bar 4 EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

5 The following 25-digit coding system has been developed to identify standard configuration options for the Fixed Displacement Swing Drive Motor. Use this model code to specify a motor with the desired features. All 25 digits of the code must be present to release a new product number for ordering. Available option Preferred option Need consult ,14 Parking brake 00 None 01 Built-in 15,16 Brake release valve (Release pressure) 00 None 01 4 bar 02 5 bar 03 8 bar 04 9 bar bar 17 Anti-reverse valve 0 None 1 Built-in 18,19 Gear ratio 00 None ## Special Ratio 20,21 Special requirements 00 None ## Special specification required 22 Painting A Primer B Eaton blue 23,24 Identification number 00 Eaton standard 25 Design number A First design EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December

6 Performance Model Motor Displacement cc/rev N.m rpm l/min bar bar N.m Module Number kg Ton X ~ X ~ X ~ X ~ X ~ ~ ~ X ~ ~ ~ , ~ ~ ~36, Standard Max. Output Torque Gear Ratio Reducer Max. speed X - Not available Max. Flow Normal Pressure* Peak pressure Mechanical Brake Torque(Motor) Time Delay Valve Anti-reverse valve Output Pinion * Normal Pressure is the max. relief valve setting pressure ** For 32cc, 39cc, gearbox integrated option is not available. Please consult AP product marketing for further information. Mass Typical vehicle application Technical Data 1 Operation temperature rating -20 C C 2 Oil viscosity recommendation Gear oil: 80W-90 Hydraulic oil: VG-46 Viscosity at 40 C 143 mm²/s 46mm²/s Viscosity at 100 C 16mm²/s 7mm²/s 3 Oil cleanliness minimum requirements NAS 9, or ISO 4406 (20/18/15) 4 Case pressure 2 bar max. 6 EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

7 Parking Brake & Brake Release Valve The Parking Brake and Brake Release Valve is incorporated into the system to provide controlled operation and reduction of wear to the Swing Motor. The Swing Parking Brake consists of multiple wet friction plates. The brake is applied via a spring force and removed by pilot pressure. Parking Brake - OFF [disengaged] When SH port receives a hydraulic signal from a Hydraulic Remote Control (HRC), the spool in the Delay Valve shifts, opening the PG port. The pilot signal from PG is transferred to the chamber of the brake plate piston which overcomes the spring force and instantaneously lifts the friction plates disengaging the brake. Parking Brake - ON [engaged] When SH port receives no hydraulic signal from a HRC, spring force shifts the spool in the Delay Valve back to its neutral position, blocking the PG port. The pilot signal from PG to the brake plate piston is lost and the pressure in the pistons chamber starts to discharge to the Drain port through the Delay Valve Orifice. The orifice is sized to ensure a six second time period is achieved, giving time for the Swing Motor to completely stop before the friction plates engage with the brake. EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December

8 Anti-Reverse Valve The Anti-Reverse Valve is incorporated into the system to prevent uncontrolled reverse rotation and bounce back of the Swing Motor during the stopping cycle. Benefits of this functionality are to prevent loss of load from the bucket and reduction of mechanical stresses or accelerated wear on the motor shaft and work circuit pinions. Starting the swing operation When ports A and B are open, the upstream poppet of the Anti-Reverse Valve shifts to produce flow through an orifice to the spool end spring chamber. The spool in the Anti-Reverse Valve shifts from its Neutral position blocking its by-pass orifice allowing smooth operation of the Swing Motor. Stopping the swing operation When ports A and B are blocked, there is no flow to the motor preventing any further swing movement. However, due to swing inertia of the excavator's upper body the motor will continue to rotate, inducing pressure in the downstream port. The pressure on the upstream side of the motor decays whereas downstream continues to rise until it overcomes the mechanical advantage of the work circuit, at such point the compressed oil will force the motor to reverse. Concurrently, the Anti-Reverse Valve compensates for the fluctuating loads across the motor until equilibrium is achieved and the spool returns to its neutral position. 8 EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

9 Relief Valves Relief Valves are incorporated into the system to prevent internal damage of the Swing Motor and Brake Swing. When ports A and B are blocked, there is no flow to the motor preventing any further swing movement. However, due to swing inertia of the excavator's upper body the motor will continue to rotate which induces excessive over pressure in the downstream port. The Relief Valves function is to discharge the rising port pressure from the high pressure port to the low pressure port of the motor. Anti-Cavitation Valves Anti-Cavitation Valves are incorporated into the system to prevent internal damage of the Swing Motor and Brake Swing. When ports A and B are blocked, there is no flow to the motor preventing any further swing movement. However, due to swing inertia of the excavator's upper body the motor will continue to rotate, starving the motors upstream port of oil which induces Cavitation. The Anti-Cavitation Valves function is to scavenge oil from the tank line through MU Port to supplement insufficient oil volume until the motor completely stops. EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December

10 Installation Dimensions JMF029~250 Main port C E B I H D X F G A Unit: mm Model øa B C D E F øg H I X Main Port ø17 2-G1/2 (2-PF1/2) ø17 2-G1/2 (2-PF1/2) ø17 2-G1/2 (2-PF1/2) ø17 2-G1/2 (2-PF1/2) ø17 2-G1/2 (2-PF1/2) ø17 2-G1/2 (2-PF1/2) ø18 2-G1/2 (2-PF1/2) ø17 2-G1/2 (2-PF1/2) ø18 ø13 Flange ø18 ø13 Flange ø18 ø13 Flange ø22 ø20 Flange ø26 ø25 Flange ø26 ø26 Flange ø26 ø26 Flange 10 EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

11 Gearbox Output Shaft Dimension, mm 29/30/33/36 Spur gear 43/47/48 Spur gear 53 Spur gear Number of teeth 13 Module 7 Pressure angle 20 Number of teeth 12 Module 8 Pressure angle 20 Number of teeth 12 Module 8 Pressure angle 20 Φ91 Φ96 Φ96 Add modification coefficient 0.5 Add modification coefficient 0.55 Add modification coefficient 0.35 Span measurement Span measurement Span measurement Span number 3 Span number 2 Span number 2 64/68/ Spur gear Spur gear Spur gear Number of teeth 12 Number of teeth 13 Number of teeth 14 Module 10 Module 12 Module 14 Pressure angle 20 Pressure angle 20 Pressure angle 27 Φ120 Φ156 Φ196 Add modification coefficient 0.43 Add modification coefficient 0.74 Add modification coefficient 0.5 Span measurement Span measurement Span measurement Span number 2 Span number 2 Span number 2 233/250 Spur gear Number of teeth 15 Module 14 Pressure angle 27 Add modification coefficient Φ Span measurement Span number 3 EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December

12 Motor Output Shaft 29/30/33/36/43/47/48 Involute spline 64/80 Involute spline 151 Involute spline Number of teeth 15 Pitch 16/32 Pressure angle 30 Number of teeth 16 Module Pressure angle 20 Number of teeth 16 Module 2.5 Pressure angle 20 Φ Φ Φ40 Major diameter Φ24.8±0.1 Minor diameter Φ Displacement(3) Displacement(3) Over pin(φ3.048) Φ Φ Over pin(φ3) Φ Over pin(φ4.5) Φ /250 Involute spline Number of teeth 13 Pitch 8/16 Pressure angle 30 Involute spline Number of teeth 20 Pitch 2.5 Pressure angle 20 Φ Φ50 Major diameter Φ43.71 Minor diameter Φ Form diameter Φ Base diameter Φ Displacement(3) Over pin(φ4.5) Φ Over pin(φ3.048) Φ EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

13 Application Description Swing Function Starting the swing operation When the Swing Motors Delay Valve receives a hydraulic signal from a Hydraulic Remote Control (HRC), the Parking Brake is disengaged. Simultaneously a control valve receives the same signal which opens A and B ports, consequently shifting the Anti-Reverse Valve from Neutral giving full operation of the Swing Motor. Stopping the swing operation When the HRC is in neutral, the Delay Valve commences its six second discharge before the Parking Brake engages with the Swing Motor. This delay gives adequate time for the Anti-Reverse Valve, the Anti-Cavitation Valves and the Relief valves to control the system inertia bring the Swing Motor to a controlled stop. Troubleshooting General Precautions If you experience abnormal operation of the Swing Motor, consider all elements within the work circuit that could potentially effect the Swing Motor's performance. If deemed necessary to disassemble the Swing Motor it is critical to do so in a clean environment, in order to ensure no contamination is introduced during the reassembly process. In the event of disassembly, note that the internal hydraulic components of the Swing Motor are precision manufactured and as a result must be handled with care to avoid irreversible damage. Diagnosis & Maintenance If the motor is making an unusual sound. Unscrew the plug from the case drain and check whether the recommended level of oil is present. Top up the oil level if required. Check the quality of the oil, if impurities are found replace the oil to optimize the life of the Swing Motor. If you still experience abnormal operation of the motor, measure the pressure through out the work circuit to assess whether or not the motor is at fault. EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December

14 Application Data Sheet Contact: Company/Location: Distributor/Eaton Contact: Prototype / Production Date: Date: Model / Application: Annual Usage: Machine Specifications: Available RPM: rpm Vehicle / Component Weight: lbs / kg Machine Life Goal: hours Machine Usage Environment: Machine Temperature Range: F / C Type of Hydraulic Circuit: Open/Closed Main Relief Set Pressure: psi / bar Main Relief Set Flow Rate: gpm / lpm Max Working Pressure: psi / bar Max Flow per Motor: gpm / lpm Hydraulic Oil Type: Hydraulic Oil Temp Range: F / C Current Swing Drive (mfg, model): Hydraulic Schematic Available: Y or N Current Swing Drive Motor Info: in 3 / rev / cc / rev Requested Specifications: Max Pinion Output Speed: rpm Swing Drive Lifetime: hours Max Pinion Output Torque Required: ft-lbs / Nm Motor Brake Required: Parking / Service / No Swing Mass: lbs / kg Motor Brake Torque Required: ft-lbs / Nm Accelerating Torque Required: ft-lbs / Nm Brake Release Pressure: psi / bar Pinion Teeth: Teeth Counterbalance Valve Pressure: psi / bar Pinion Pitch Diameter: in / mm Anti-Shock Valve Pressure: psi / bar Pinion Pressure Angle: Degrees Motor Displacement: in 3 / rev / cc / rev Pinion Diametral Pitch: Teeth / inch Gear Ratio: :1 Slew / Pinion Ratio: Shaft Type Required: Slew/Pinion Center Distance: in / mm Backlash Adjustment Method: Max External Loads: Max Separation Force (Fr): lbs / N Thrust Force (Ft): lbs / N Hub Face to Pinion Centerline (L): in / mm Thrust Force Location (R): in / mm Motor Duty Cycle Information: Pressure/Torque Speed Direction % Duty Additional Information: 14 EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December 2015

15 Notes EATON Swing Drive Motor Catalogue E-MOPI-MC019-E5 December

16 Eaton Hydraulics Group USA Lone Oak Road Eden Prairie, MN USA Tel: Fax: Eaton Hydraulics Group Europe Route de la Longeraie Morges Switzerland Tel: +41 (0) Fax: +41 (0) Eaton Hydraulics Group Asia Pacific Eaton Building 4th Floor, No.7 Lane 280 Linhong Rd. Changning District Shanghai China Tel: (+86 21) Fax: (+86 21) Eaton Corporation All Rights Reserved Document No. E-MOPI-MC019-E5 December 2015